Computing-machine.



T. I. POTTER.

COMPUTING MACHINE. APPLIOATION TILED mm: 24, 1911. RENEWED JUN; 25,1912.

1,035,047, Patented Aug. 6,1912. 7

' I "1 snnmvsnnnm. 1

'If.I.POTTER. COMPUTING MACHINE. APPLICATION IILE I JUNE 24, 1911. RENEWED JUNE 4 1,035,047, Patented Aug. 6,1912.-

'7 SHEETS-SHEET 2.

T. LPOTTER. COMPUTING MACHINE. APPLIUA'HUN 1111113111111: 24,1011. RENEWED JUNE 25,1912.

1,035,047. Pmtented Aug. 6,1912.

T. I. POTTER. COMPUTING MACHINE. I APPLICATION FILED JUNE 24,1911. RENEWED JUNE 25, 1912. Patented Aug. 6, 1912.

7 sknms-sanm 4,

TQI. POTTER.

I COMPUTING MACHINE. APPLICATION FILED JUNE 24, 1-911. RENEWED JUNE 25, 1912. 1,035,047.

Patented Aug. 6, 1912.

7 SHEETS-SHEET 6..

T. I. POTTER. COMPUTING MACHINE. APPLIOATION FILED JUNE 24, 1911. RENEWED JUNE 1,035,047.

Patented Aug. 6, 1912.

'! SHEETS-SHBET 6.

MIN-HI T. I. POTTER.

COMPUTING MACHINE. APPLICATION FILED JUNE 24, 1911. RENEWED JUNE 25, 1912.

1 35,047 Patented'Aug. 6, 1912.

THOMAS IRVING POTTER.

i. @i iillttii l.

OI PORTLAND, OREG ON.

COMPUTING-MACHINE.

Application filed June 24, 1911, Serial No. 635,144.

Specification of Letters Patent.

Patented Aug. 6. i 27 Renewed June 25, 1912. Serial No. 705,868.

To all whom it may concern:

Be it known that I, THOMAS Invrnd Io'rrun. a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Computing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

This invention relates primarily to machines designed for the computation of change in money transactions between a merchant and his customer, provision being made whereby the machine automatically ejects an amount corresponding to the difference between the purchase price and the amount deposited by the customer.

The objects of the invention are to simplify the mechanism. for making the computations, as well as the mechanism for handling and ejecting the change, and at the same timeincrease both the accuracy, elticiency and capacity of the machine.

The machine of the present invention can bodies in its organization a control device or selector having motions in two intersecting planes,. the motion in one plane being controlled and determined by a group or set. of keys corresponding; to one set of factors, and the motion .in the other plane being controlledand determined by a group or set of keys corrcspomling to another set of factors, any of which may be used in the computation. The control device orselector preterably has its surtacc ot cylindrical form, divided into sections, each section corresponding to one of the possible combinations which can be. formed by operatii'ig a key of each group, there being a section of the control device or selector for each possible combination which can be made in the manipulation of the machine, whereby permutation of the control means is a\ 'oided, as well as the necessity for movements of the same in opposite senses, as has in most instances been thought necessary in change computingmachint-rs.

The invention consists in certain novel dc: tails of construction and combimitions and .mgement of parts, all as will. be hereinalter described and pointed out particularly in the appended claims.

Referring to the m'compmrving drawings.--l ignre l is a l'ront elevation ol :1 change making or computing machine cmbodying the prcsent improvements; Fig. 2 is a perspective \'l('\\' looking at the trout of the machine, but \vithdhc coin stacks and chute, together with thh keyboard rcmovcd and parts broken away to show undcrlyiiu, parts; Fig. 3 is a top plan view with the keyboard removed and some of the parts broken away and in section; Fig. l: is a sectional view in a vertical plane showing one bank oi keys and the mechanisi-n controlled thereby in side elevation: Fig. I) is a vertical section substantially on the line indicated at 5--3, l ig. looking toward the left; Fig. 6 is a plane projection of the surface of the control device or selector showing the apertures pertaining to each section of the surface in their proper relative positions; Fig. 7 is a detail of the autmnatic release lcvcr .l'or the key lock; l ig. b is a detail perspective view of the release lever catch; Fig. 9 a similar View of the release lever pawl; Figs. 10, J1 and 12 are elevations, partly broken away, at one of the spacer segments (2 arms and sheave segment. adapted to be moved thereby for determining the position oi the selector or control device in one dircetion; Fig. 13 is a sectional elevation showing one of the ejector lovers, with its actuating segment and arm for depressing the coupliug mechanism and selector pins; Fig. l-t is a detail showing the actuating segment and arm of Fig. 13, together with the depressing cam with which the arm'cotipcrates; Fig. 15 is a detail )erspective view of the cam; Fig. 16 is an edge elevation partly broken away of the arm shown in Figs. 13 and l-i {Fig 17 is a sectional elevation showing a modification of the ejecting mechanism; and .l ig. 18 is a side elevation of one of the segmental spacer arm actuators.

Similar letters of reference in the several figures indicate the same parts.

The machine adopted for illustrating the present invention is one that may be said to have a limited capacity, inasmuch as it is designed onlv for computing and delivering change .in increments oi one unit, say, one

dollar, up to and including nine units ordollars. That is to say, the machine, upon the deposit of nine dollars, or any number of dollars less than nine, and the purchase of goods of the value of an even dollar or dollars up toeight dollars, is adapted to return to the purchaser a. proper amount of change. It will be understood, however, that the princi iles and, in fact, the mechanism itseli may be utilized in machines having any desired capacity, either by extending the number of keys, and coin receptacles with control mechanism therefor, or by utilizing mechanism, such as herein illustrated, as one unit in an organized machine embodying a plurality of such units adapted to handle amounts in increments on the decimal system. I

Referring to the accompanying drawings, it will be seen that the machine embodies a keyboard having two groups or rows of keys numbered from 1 to 9, inclusive, one of said rows having keys to correspond to the amount deposited. by the purchaser, and the other of said groups or rows having keys to correspond to the amount of the purchase.

The deposit keys are indicated by the letter A, and the purchase keys by the letter B. Each group or" keys is adapted to primarilycontrol the positioning of the control. of selector mechanism in one plane or direction, the plane of the movement controlled by one group being at substantially right angles to the plane of movement controlled by the other group. At one side of the keyboard there is mounted a group of coin receptacles or stacks, which in the particular machine illustrated comprises three stacks indicated by the reference letters C. C, G, adapted to contain silver dollars and one indicated by the reference letter C adapted to contain five dollar gold pieces.

The coins are adapted to be discharged from the bottom of the stacks into a chute or receiver C shown in front elevation in Fig. 1., by mechanism which will be hereinafter described.

In the preferred arrangement of the groups of keys, as shown in F l and 4,. they are m the form of parallel proximate rows, and. the keys of each row, as shown in Fig. 4, are mounted in the frame of the machine so asto slide inwardly, preferably in substantially radial lines, so that the vinner rounded ends a of any one of them may be made to project inwardly beyond the general plane or line of the group. Each key is normally held out by a spring a, and each bears on one edge a projectionor tooth adapted to displace and pass beneath a spring pressed or gravitating key lock or retaining slide 1). The retaining slide or key lock D for each group of keys is prei era'oly segmental in form and the apertures d therein, through which the keys pass, are so positioned with relation *to' each other and with relation to the keys that upon the. depression of any key the said lock will drop back above the tooth a and retain the key in its depressed position. Should tiny other key of the group be operzited it will, -in mov-" ing the key lock plate D, release the key first operated, thus preventing the retention of more than one key in depressed position at one time.

On the main operating shaft E journaled in the frame at approximately the point from which the keys radiate, are keyed a pair of segmental spacer arm actuators F (F igs. 2 and 1.8), andjournaled on said shaft beside each of the segments F is a spacer arm segment. The segment G for cooperating with the deposit keys has upon its periphery, a segmental rack g which meshes with a pinion g on the selector shaft H. The segment G which cooperates with the purchase keys (Figs. 2 and 10 to 12) is provided on one side with a segmental sheave G to which a flexible connection such as a metal tape G? is attached for the purpose of moving the selector in one direction, as will be presently described. Each of the segments arm Gr having pivotally mounted thereon a key engaging dog G which is adapted to strike and be turned by a depress-ed key into position to lock the key and segment together. The dogs G have connected to them a radially movable bolt G guided at its inner end by the segment and adapted to move into or out of a slot or recess f (Fig. 18) n the segmental spacer arm actuater,

so asto lock the spacer arm actuator and spacer arm segment together, except when the dog is swung by engagement with a key so as to release the bolt from the recess f.

,Wh'en so released the actuator Fis free to advance, leaving the spacer arm segment lockedto the depressed key and the concentric surface f of the actuator F, by cooperation with the end of the bolt G will prevent the disengagement of the dog and key until the parts are returned to their initial relative position, where the bolt may again enter the recess f.. Mechanism of this general character is known and further detail description of the same would seem to be unnecessary for a complete understanding of the present invention.

In the present machine, provision is made whereby, when akey has been depressed, and the actuator advanced from its normal key, operation of other keys of the group will be prevented, and when the actuator and. dog return to normal position, the op-- .erated key will be released and allowed to return to its elevated position under the influence of its spring. The mechanism for accomplishing these ends will be best under" stood by reference to Figs. 4: and 7 to 9, inclusive, The key lock plate D for each group of keys is near its upper end provided with a pivoted release lever pawl I, shown in detail in Fig.9, the pivotal connection be Gr and G is provided with a radial position to cause the dog to engage with a tween the pawl and plate D being preferably a loose connection, whereby the parts are pern'iitual. a limited independent bodily movement. The pawl I is provided with two projections 1', z". The projection 2' has an inclined for aid edge and is adapted. when the plate I) is advanced, to ride up on a cross pin i upon which the torward end of the pawl normally rests. The extreme end of the pawl is in the form of a hook 4. adapted to pass through an aperture in and engage an automatic lock and release. lever K, (Fig. 7) pivoted at its upper end to the frame of the machine and extending down in position tor a. cross pin Z: on its lower end to be struck by the dog (3 when the dog in its normal position, as shown in Fi 1. In this position of the parts, the hook 1- of the pawl is adapted to ride on an incline Z:' on the release lever, but the movement of the key lock 1) under the intluencc of any one of the keys does not advance the same sntliciently tar for the hook to engage the lever, but should the lever he allowed to swing inwardly under the influence of its spring K. the pawl would pass through the aperture in the lever and the latter would be locked thereto. \Vhen so locked. the lever rests against the end of the key loek l), and prevents the key lock t'rom being advanced, as by the depression of anotberkcy. In order to lock the lever in this position a release lever catch (Figs. 41- and 8) indicated by the letter l. is pivoted on the frame of the machin and adapted to book eye a shoulder K on the release levcr wlu-nevcr the latter is allowed to swing in by the movement of the. dog (1 away 'l'rom the same. The dog (5' normally rides under a projection l on the catch so as to hold the same elevated. and so as to release it whenever the dog returns to its initial position.

In operatirn. it will be understruul that when a key is depressed the lock plate 1) drops ba k'into position above the projection 1/ on the key and when the actuating segment and dog (i is ad vanccd the release lever moved into position to engage with the pawl l and the catch ll drops down ov r the shoulder K so as to h ld the release lever in lo -king position. l pon the return ot' the dog ti to the position shown in Fig. -'l-. it lirst lil'ts the catch and then by its ongagement with the pin l' ,on the release lever. swings the lever out to the position shown in Fig. -l. carrying with it the pawl I and lock plate l). The iulvance ot the lock Plntt'. l)- rch-ascs the depressed lmy, and the inclined projection r" on the pawl, riding up on the pin 1". disengages the pawl trom the lever and the parts immediately. resume the position shown in Fig. 1.

llie mechanism for locking and releasing the keys. it w-illrbe understood, is duplicated for each group of keys inasinueh as it is preferred that each group of keys shall be entirely independent of the other group in so far as the operation of locking and release are concerned.

The shaft: ll, bet'ore referred to, is journaled in the frame substantially parallel with the shaft E and upon it there is keyed, so as to slide freely, the control device or selector, preferably in the term of a cylinder M, which, as it rotates in unison with the shaft, will be positioned 'angularly through gear or pinion g and rack or segment 9, in accordance with the position of the actuating segment. The selector M is normally held in its position at one end of the shaft H by a spring or yielding pressure mechanism which may assume various terms, but is preferably a spring pressed carriage M mounted on a shaft. M and connected with the selector by an arm M best seen i'l Fig. 5), the end of which works in a groove or hearing at one end of the selector. coil spring M servcs to hold the carriage and selector at one extreme of theirmovement. The flexible cot'ineetion 1} before referred to, is connected to the carriage at one end, as seen in Fig. 3, passes around a pulley (i and at the other end is connected with the sheave segment. G It serves to advance the carriage against the tension of spring M", and to position the selector longitudinally of the shaft, in accordance with the; angular movement of the actuating segment G as determined. by the engagement of its dog with the operated key of the groitp of purchase keys.

From the fore oing it will be seen that the selector may be positioncd both angularly and longitudimilly ot its axis in accordance with the actuated key of the two groups. Thus it becomes ,possible to position the actuator dillcreiil lytor each possiblc combination of the keys-lot the groups, and by dividing the surface oi? the actuator into sections correspoiidingto these positions, and providing means for cm'iperating with the surtace or with the tormation ot the surface in the particular section, an ett'cctivc control may be provided through simple mechanical appliances, but with a very large capacity in so t'a as the possible number o't ditt'crent combinations which may be etl'ccted by the groups of keys is concerned.

In the preferred (amstruction. apertures are provided in the surface ol' the selector into which pins may enter tor the opera tion or control ol the opta'ation of the coin ejecting mechanisms. planc projection of the simple form of selector cylinder ot the present machine is shown in Fig. t. and in this figure ot' the drawing the positions to which the c 'linder or sclerlor is moved under the control of the two groups of keys, are indicated by dotted lines, the transverse dotted lines corresponding to the angular positioning of the selector, are numbered in accordance with the keys of the deposit group ofdreys. The longitudinal dotted lines indicate the positions controlled by the purchase group of key, and are cor respondingly numbered. The intersections of the dotted lines on Fig. I number of possible combinations or posit-ions to which the selector might be adust-ed or controlled by the two sets or groups of keys, but in the practical embodiment of the machine illustrated it is not necessary to utilize all of these combinations for the reason that in a money transaction the deposit must always exceed if there is to be a return of any change, an consequently, in all positions where the deposit would only equal or be less than the purchase, the surface of the selector is left blank. i

in locating the apertures in each position to which the selector may be adjusteth'said apertures are preferably arranged in diagonallines above and below the intersection of the center of the positions indicated by the dotted cross line, thus, for instance, as shown in Fig. 6, the diagonal rows of apertures inclosed by the diagonal dotted lines constitute one group. Each group of apertures is inclosed by a diagonal dotted line, so that the several spaces may be easily distinguished from each other and to show that the selector is subdivided into spaces or sections corresponding to the positions to which the selector may be adjusted.

For cooperation with the selector there is mounted above the same a group of four pins N, said pins being slidably mounted in a frame O and normally held down or .in projected positions by coil springs 11. The frame 0 is mounted on the upper end of a shaft 0 which maybe conveniently termed a lock depressor shaft, said shaft extending down approximately to the ing mounted thereon a cam 0 Figs. 14 and 15 for depressing the shaft, frame 0 and pins periodically, as will be hereinafter ex plained. If, when the pins are depressed or moved down toward the selector, an aperture or apertures be in line therewith, they,

will enter said apertures and move down with the frame 0, but if no aperture be in position they will be arrested by the surface of'the selector and held up. in inoperative position. Each pin N has an arm N connected thereto, and said arms, are utilized as the means whereby the ejection of the proper coins for the change to be given a ciistomer is controlled. Various arrangements For accomplishing this end will at once suggest themselves, and in the drawings, particularly in Figs. 5 and 17, two forms of mechanism are shown.

In Fig. 17 the end of each arm N works 6 indicate the carry the slide the purchase shaft E and hav osses? shoulder N against a fixed portion of the. frame, whereby the slidc is held against be; ing advanced. When the arm N is depressed, as by its pin moving the apertures in the selector, it carries the rear end of the slide N with it, disengaging the shoulder N and-moving the notch N of the slide into engagement with a reciprocatory actuator N mounted on the shaft E. Oscillation of the shaft R will therefore forward and discharge a coin or coins from the coin stack through the bottom of which the slide works. As the slide advances it moves away from the arm N and is held in engagement with the actu' ator N by its rear end passing beneath the uide surface in which the slide works.

In Fig. 5 and in the other figures of the drawing, each of the arms l terminates in a downwardly extending pin a,'each adapted to slide in an aperture a formed in the frame of the machine, or in a oortion of the baseof the coin stacks, and each previdell with a collar n forlimiting its downward movement. The lower ends of the pins bear on the heads of locking pins 1, each mounted'in' a coin ejecting slide 1?, but adapted to be projected by its spring 1) so as to normally enter the fixed frame and lock the slide against movement in either direction. \Vhen depressed by the P111 n the locking pin will occupy a position with its upper end or surface in line with the upper surface of the slide and consequently the slide is then free to be advanced for the ejection of a. coin. Thelocking pin moves away from the pin m and beneath the surface of the guideway for the slide, whereby the locking pin is held depressed until the slide or ejector again returns to its normal position. The action is quite similar to that of the action of the tumbler pins in the well known Yale lock. In the present instance, however,:the locking pins are also utilized as the means whereby the slides or ejectors are located or connected to their actuating de-' vices. Thus, on the shaft E there is journaled a series of arms Q, recess or slot g in its upper end into which the lower end of the locking pin P of the particular'slide to be operated by the actuator is adapted to enter when depressed by the arms N, a, as before explained. The

arms Q, Q, are oscillated or moved by the Y shaft E,

Said slide is normally Q, each having a into one of on the shaft slotted segments ll keyed to the shaft and into the slots '2' in which pins 7" in the arms Q. project.

()ne of the slotted segments keyed to the shaft 1) is utilized as av part of the driving connection for depressing the pins N. and inasmuch as the pins must be depressed preliminary to the movement of the-ejecting slide or the arm for operating the ejecting slide. this segment which is lettered R, Figs 1, '13 and l t is made with a somewhat shorter slot therein, and the pin r in this instance is mounted in a depressor arm R, journaled on the shaft and having near its outer end an anti-friction roller or pin R, which is adapted to ride over the cam 0 The depressor arm is shown in detail in Fig. 1(3, and its coopera tive position in connection with the cam is clearly indicated in Fig. 1-4. The slot in the segment R is of such length that at the proper moment in the operation of the machine, the pin r with the arm in which it is mounted, will be advanced to depress the pins N, and in order that the ejector arm Q may remain at rest until the pins are dcpressed, the said arm Q is provided with a slot in which the end of the pin r works,

said slot 1f being of such length that the pin will move the arm 1] after the cam has been depressed and at substantially the same instant that the other arms begin their-movement.

For elevating the wins N together with the frame 0 and sha t O a coil spring indicated at S in Fig. 5 may be employed, and the frame 0 is conveniently kept in proper alinement or held against angular movement about the axis of the shaft 0' by a guide pin S, although it will be understood that the shaft 0' might be of irregular cross section, as it is in effect a sliding frame having no movement of rotation.

The coin ejecting slides P work in guideways T in the bottom of the coin stacks or receptacles, and are adapted to advance only a relatively short distance, inasmuch as in the preferred construction the coins are supported on segmental ledges '1", Fig. 3, which will permit'a coin to escape when moved forwardly a relatively short distance, but will constitute an effective support; for the pile of coins above the bottom coin, which is being adv: .r' 'l. The coin slides or ejectore for the stacks (l. (l. are each adapted to discharge one coin or silver dollar. while the slide or ejector tor the stack 0' is adapted to discharge two silver dollars at each oper' ation. The ejector for the five dollar stack is adapted to discharge a single coin at each operation. lvith this ramstruction. if all of the electors or slides are operated simultancoosty, nine dollars in value will be ejected and by the operation of the proper individual ejector-s any number of dollars of a value less than nine. may be ejected.

A transaction involving the use of the machine may be briefly described as follows: A customer making a purchase, hands the merchant a five dollar gold piece. The merchant deposits the tive dollar gold piece in the proper stack. depresses the No. 5 deposit key and the No. 2 purchase key. Upon drawing forward on the handle E the seg ments G, G, are advanced until their dogs engage and cooperate with the deynessed keys. In performing this movement the key locking mechanism has been made ett'ective by the advance of the lever K and the securing of the same by the latch 1), so that no other key can be operated during the manipulation 0f the machine. The movementof. the segment G rotates the shaft ll and through it the selector and, simultaneously, the movement of the segment (ir' moves the selector longitudinally of its axis, whereby the proper apertures are brought beneath the pins M, for returning to the customer $3 in change. By reference to Fig. (3, it will be seen that at the intersection of the transverse dotted line 5 (deposit key) and the longitudinal dotted line 2 (purchase key) two apertures arc in position for permitting the depression of pins which will lock the coin ejecting slide for the stack C to its actuating arm, and the coin ejecting slide for one of the stacks C to its actuating arm. Further movement of the shaft Fl causes the depression of the pins N and the locking of the said slides to their actuating arms while the slides for the other stacks are held in their retracted position by their locking pins or shoulders. Continued movement of the shaft E advances the coin ejecting slides and discharges $3 through the coin chute to be returned to the customer when the transac tion is complete, and the handle E may be returned to its initial position so as to restore all of the parts.

If, for any reason, it should be desired to release keys which have been actuated, without actuating other keys. this may be acromplished by manipulation of the key lmk' l) and. conveniently, a hell crank release kcy TT is mounted at the lower end of the groups of kevs. which the merchant may manipulate so as to nnnc the key lock D upwardly and thereby rel ase any kmj which may have been depressed.

Having thus described my invention what- T claim is 1. in a machine such as described. the combination with a selector movable in two directions at substantially right angles to each other and an operating shaft and bandle. of independent driving connections intermediate the shaft and selector for moving the selector in each direction. respectively.

shaft and handle,

eas es ans controlled by r the keys-for disconnecting the driving connections and thereby determining the extent of movement imparted direction.

to the selector in each 2. In a machine such as described, the

Combination W ith a die and shaft, of

moving the selector moving it angularly and means, controlled necting the driving 0 shaftand selector,

selector movable both 'angularly and axially and an operating hanseparate tions between said shaft and selector, one

axially and the other for driving connecfor , two groups of keys,

thereby for discononnections between the one group of keysthereby determining the angular and the other group the axial movement of the selector.

3. In a machine such as described, the

combination with a selector movable both angularly and axially, and an operating nections between said separate driving conshaft and selector, one

for movingthe selector axially and the other for movlng it angularly,

means for disconnecting tlons independently of each other,

and key controlled the driving connecwhereby the extent of movement in each direction may be determined.

4. In a machine such as described, the

combination with a angularly and axially,

shaft and handle, of

selector movable both and an operating separate driving connections between said shaft and selector, one for moving the selector ax1ally and the other for moving it angularly,

key controlled means for disconnecting the driving connections between the shaft and selector, and means for locking the selector against movement when disconnected from the operating shaft.

In a machine such as described,

combination with a angularly and axially,

shaft and handle, of nections between said the selector movable both and an operating separate driving conshaftand selector, one

for moving the selector axially and the other for moving it angula rly, and key controlled means for independently disconnecting said ing the selector again driving connections and simultaneously lockst further movement in the direction controlled by the disconnected driving connection.

6.111 a machine such as described, the combination with a selector movable both angularly and, axially, an operating shaft and handle, and separate driving connections between said s haft and selector, one

for moving the selector axially and the other for moving it angularly, of groups of keys,

and means controlled by all of the keys of motion between pendently of the other group disconnecting a driving conthe shaft and selector indeof keys and substantially as de- 7. In a machine such as described, the combination with a selector movable both angularly and axially, an operating shaft and handle, and separate driving connections bet-ween said shaft and selector, one for moving the selector axially and the other for moving it angularly, of two groups of ,keys, means controlled by the keys of each group for disconnecting one of said driving connections, said meansembodying a pivoted key engaging dog, and a locking bolt interposed in the driving connections and controlled by said dog.

S. In a machine such as described, the combination with a selector movable both angular-1y and axially, an operating shaft and handle, and separate driving connections between said shaft and selector, one for moving the selector axially and the other for moving it angularly, of twogroups of kcys,-mcans controlledby said keys for disconnecting the driving connections, and means for locking the keys during the move-' ment of the shaft and selector.

9. in a machine such as described, the combination with the selector movable both angularly and axially, an operating shaft and handle and driving connect-ions between said shaft and selector for moving it angularly and axially, of separate groups of keys controlling the angular and axial movements of the selector respectively, and a key lurking mechanism controlled by the shaft, whereby during the operation of the shaft and selector the keys are locked against operation.

10. In a machine such as described, the combination with the cylindrical selector, a rotary shaft on which the selector is mounted to move longitudinally, an operating shaft and driving connections interposed between the operating shaft and selector shaft and between the driving shaft. and selector, whereby the selector may be moved both angularly and axially, said driving connections each embodying concentric segments, one carried by the shaft, and the other loosely journaledthereon, of locking bolts for connecting the concentric segments for unitary .movement, bolts, and two groups of keys, the keys of each group beingadapted to cooperate withone of the do s, whereby the driving connections between the operating shaft and selector may be disconnected. I

11.- In achange'making machine, theic'ombination with a cylindrical selector movable both angularly and axially, money di'scharging mechanism a-nd' pins controlling the actuation of the money mechanism and adapted: to cooperate with the selector in determining the amount of money discharged, ot' a driving shaft, indeendent connections intermediate the drivmg shaft and selector for moving the selec- 1 dogs controlling said 1 discharging 1 mechanism.

and two grou s of tor angularly and axially, respectively, and two series of keys, one series for disconnecting the driving-connection controlling the axial movement of the selector, and the other series for disconnecting the driving connection controlling the angular movement of the-selector.

12. In a change making machine, the combination with a selector movable both angularly and axially, money discharging mechanism, pins controlling the actuation of the money ischarging mechanism, and adapted to cooperate with the. selector in determining the amount of money discharged, and an operating shaft, of separate driving connections between the operating shaft and selector for moving the selector angularly and axially, respectively; each of said driv' ing connections embodying concentric segments, a locking bolt for connecting said segments and a dogk controlling said bolt, eys, the keys of each group being a apted for movement into the path of one of the locking dogs, whereby the driving connections between the operating shaft and selector are controlled and the movements of the selector may be arrested at predetermined points.

13. In a chan e making machine,the combination with t e cylindrical selector movable angularly and axially, and money discharging mechanism controlled by the selector, of an operating shaft, arms mounted on "said shaft and having a limited movement eys of each group for disconnecting one of the driving connections between the shaft and selector, whereby the selector may be 'positionedand a continued movement effect the; operation 'of the money discharging 14. In a change 'making'machine, the combination with the money discharging mechanism, an operating shaft, arms for operating the money discharging mechanism mounted on said shaft and having a limited connections between the money discharging mechanisms and the operating arms on the shaft, a group of keys, and means controlled by said eys for disconnecting the driving connections between .the shaft and selector.

15. In a change making machine, the com-j bination with the money discharging mech-.

anism embodying a plurality of slides, an

bination with the operatingshaft, arms loosely journaled thereon, segments carried for moving said arms during a portion of ing mechanism embodying slides operated by the arms on the shaft, and means controlhug the connections between said slides and operating arms embodying spring pressed pins, of a cyllndrical selector havingaperconnection independent of the arms between selector with respect to the pins.

, 17. In a machine suchas described, the

combination with a rotary selector shaft, a

selector mounted to n o ve longitudinally on lector, of selector operating machanism embodying an operating shaft, a gear segment, and 'a sheaye segment journaled on the operating shaft, a pinion on the selector shaft meshing with the gear segment, and a flexible connection intermediate the sheave segment and selector, and key controlled means for connecting the segments and shaft whereby the keys determine both the angular movement and the axial movement of the selector. 3

18. In a machine such as described, the combination with a rotary selector shaft, and selector mounted to rotate with and move longitudinally of said shaft, of an operating shaft, independent gear and sheave segments jonrnaled on the operating shaft, gea'r connections between the "ear segment intermediate the sheave segment and selector, locking. bolts for connecting said seg- -ments and shaft for unitarymovement, and two independent groups. of keys, the keys of each group being adapted to control the locking bolt for one of the se ents;

19. In a change making mac ine, the combination with the selector; elector shaft and pins for cooperation: witli the selector, of selector operating mecha m embodying an operating shaft, two-set ,of concentric segwhereby the selecto is movedingularlv and 16. In a change makingmaehine, the comthe movement of the shaft, money discharg-.

'tures therein for said pins, and. a driving;

said shaft and selector for positioning the" said shaft, and pins cotip'era'tingw-ith the se'-" and selector shaft. and a flexible connection by the shaft and cooperating with the arms ments, one se ment of eachset being fast and the other oose on theshaft, connection I I {between the loose segments and selector,

operating shaft, arms mounted on saidfshaft.

into the path of one of the dogs, whereby the concentric segments will be disconnected and the movements of the selector determined.

20. In a machine such as described, the

combination with the selector, oscillatory op-' crating shaft, connections between said op; crating shaft and selector for moving the selector both axially andangularly, and finger keys having projections thereon, of a key locking plate-having apertures for the projections on the keys, a locking lever for preventing the operation of said key locking plate, a catch forsaid lever, and a part movable with the shaft for releasing the catch when the shaft is in normal position. 21. In a change making machine, the combination with aplurality of coin stacks or receptacles, ejecting mechanism located in proximity to the bases of the stacks, and 0011- trolling mechanism for the ejectors, of two sets of keys arranged in parallel rows at one side of the receptacles, one set for determining the positioning'ot the ejector controlling mechanism in accordance. with the amount of money received, and the other set for determmlng the position of said mechamsm in accordance with the value of a purchase, whereby the ditterence between the amount received and the value of a purchase may be ejected from the stacks, and an operating handle located on the opposite side of the key board from the stacks with connections whereby the ejectors are operated and the operated keys of both sets returned to normal positions.

22. In a change making machine, the co; bination with coin stacks or receptacles, t '0 sets of keys arranged in parallel rows and located at one side of said receptacles, and a coin chute for receiving the coins from the receptacles and conducting them to a single point of delivery, of ejecting mechanism located in proximity to the base of the stacks, selecting mechanism governed by the keys in both sets of keys to select ejectors for ejecting coin equaling in value the differ ence between the operated keys of the two sets, and an operating handle with operating connections between said handle and ejecting mechanism, said handle being located on the opposite side of the keyboard from the coin receptacles,

THO A S IRVING POTTER.

. Witnesses: I

N. M. DEnnINo, E. L. DEERING.

Gopies of this patent may he obtained for five cents-each, by addressing the Commissioner of Eatnte;

Washington, 1?. CL v 

